Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffef7fa5b7609c8f…

MALICIOUS

PDF

69.5 KB Created: 2021-02-15 15:46:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1afb955a52718855c7c579db91a090a9 SHA-1: ac155aa9dd75bb617cada28e22b1e9e49679c961 SHA-256: ffef7fa5b7609c8f9987f7e2f0d8034b8b13acbda2a232d1d60de70e7304a500
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://druttle.ru/wix?keyword=toro+418+ze+manual PDF link annotation
    • https://vaxurubezinijor.weebly.com/uploads/1/3/4/6/134690270/rubuzumifijomode.pdfIn PDF document text
    • https://paparudedolenod.weebly.com/uploads/1/3/4/6/134686514/2192308.pdfIn PDF document text
    • https://vifaseberafu.weebly.com/uploads/1/3/0/9/130969816/jaguxazesefi.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/mwhdhi7/mojewegogirojasova.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374847/normal_5fdfaff2e6fc4.pdfIn PDF document text
    • https://belinadojo.weebly.com/uploads/1/3/1/6/131607131/bizunilubovelekawe.pdfIn PDF document text
    • http://veletekuti.66ghz.com/ielts_listening_11_test_3_answers.pdfIn PDF document text
    • http://vuwubuwo.22web.org/transistor_jfet_2n3370_datasheet.pdfIn PDF document text
    • http://rubezemanugewev.22web.org/sazimoxawib.pdfIn PDF document text
    • https://labifunuvi.weebly.com/uploads/1/3/4/8/134847398/gudajiveg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381101/normal_5ffe7e3e548cc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wovugi/university_assignment_format_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/36017623916.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/rorudinebipinugasajipudit.pdfIn PDF document text
    • http://rojapaj.epizy.com/russian_essential_vocabulary.pdfIn PDF document text
    • http://xadaxaxug.epizy.com/bereserezozedogerutotude.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6EC 4988 bytes
SHA-256: 9c194ffa7eb04fffdbc24140fec8e223c453b2e4711011ee0d5166437e968773
font_01_sfnt_off0000e7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D4 9864 bytes
SHA-256: b989cc322f79085a40fa0a2227bc1696d14b0dc73e24d02ebadc8795b4fed815